Diaphragm coupling transmission and selection

Transmission mode of diaphragm coupling:

【1】It can withstand big fleeing, such as different types of finished parts.

[2] High-temperature transmission systems, such as inorganic systems for aircraft launching.

[3] In the case of high torque, for example, the energy equipment of a train outputs several components.

[4] Transmission of meticulous equipment system, machine tool.

Setting relationship between diaphragm and shaft sleeve of diaphragm coupling:

[1] The difference between single-diaphragm coupling and double-diaphragm coupling is the ability to deal with various deviations. In view of the complex bending of the diaphragm, the single-diaphragm coupling is not suitable for eccentricity .The double diaphragm coupling can bend in different directions at the same time to compensate for eccentricity.This characteristic is a bit like a bellows coupling, in fact the way the coupling transmits torque is similar.

[2] The diaphragm coupling is composed of at least one diaphragm and two shaft sleeves.The diaphragm is fastened to the shaft sleeve with a pin and generally does not loosen or cause backlash between the diaphragm and the shaft sleeve.Some manufacturers provide two diaphragms, and some provide three diaphragms, with one or two rigid elements in the middle, and the two sides are connected to the shaft sleeve.

[3] Diaphragm couplings are often used in servo systems. Diaphragms have good torque rigidity, but are slightly inferior to bellows couplings.On the other hand, the diaphragm coupling is exquisite and can be easily damaged if it is misused or improperly installed in use.

[4] It is necessary to confirm that the deviation is within the tolerance range of the normal operation of the coupling.Choosing the right coupling is a key step to make good use of the coupling. In the design stage, you have to consider what type of coupling to choose.

[5] The diaphragm itself is very thin, so it is easy to bend when the relative displacement load is generated, so it can withstand up to XNUMX degrees of deviation, and at the same time produce a lower bearing load in the servo system.

The diaphragm coupling can compensate for the axial, radial and angular deviations between the active machine and the driven machine due to manufacturing errors, installation errors, load-bearing deformations, and the effects of temperature rise changes.The diaphragm coupling is a flexible coupling with a metal elastic element. It relies on the metal coupling diaphragm to connect the main and driven machines to transmit torque. It has the advantages of elastic vibration reduction, no noise, and no need for lubrication. It is today's replacement tooth Ideal product for type couplings and general couplings.The diaphragm coupling is composed of at least one diaphragm and two shaft sleeves.

What are the main considerations for the selection of diaphragm couplings?

[1] The diaphragm coupling has good damping and vibration reduction characteristics, which can absorb part of the vibration energy, reduce the vibration amplitude when passing through the vibration point, and reduce the torsional vibration stress of the shaft section.It can absorb and reduce the fluctuation of the output torque of the diesel engine. For the diesel engine power unit equipped with a reduction gear box, it can reduce the impact on the gear surface when the torque is changed, and prolong the service life of the gear.

[2] It has good elasticity (low stiffness, high flexibility), the rotation angle is 10 degrees when bearing the nominal torque, and 25 degrees when the torque is large, which can reduce the natural vibration frequency of the shaft system and change the torsional vibration of the diesel engine power unit shaft system. Features, so that the diesel engine does not appear dangerous resonance speed within the required speed range.

[3] The choice of diaphragm coupling mainly considers the speed of the required transmission shaft, the size of the load, the installation accuracy of the two connected components, the stability of rotation, the price, etc., refer to the characteristics of various couplings, Choose a suitable coupling type.

[4] The working speed of the coupling and the centrifugal force caused by it.For the drive shaft, a coupling with good balance accuracy, such as a diaphragm coupling, should be used, rather than a slider coupling with eccentricity.

[5] The size and nature of the torque to be transmitted and the requirements for the function of damping vibration.Compared with non-metallic elastic elements, elastic elements have larger load transfer capacity, good service life, large and stable elastic modulus, and are suitable for high-temperature working conditions.

Diaphragm couplings have good environmental adaptability, large bearing capacity, good service life but low torsional elasticity, and poor cushioning and vibration reduction performance. They are mainly used for middle and rotating shafts with relatively stable loads.Allow working temperature up to 200 degrees.

The diaphragm coupling can compensate for the axial, radial and angular deviations between the active machine and the driven machine due to manufacturing errors, installation errors, load-bearing deformations, and the effects of temperature rise changes.The diaphragm coupling is a flexible coupling with a metal elastic element. It relies on the metal coupling diaphragm to connect the main and driven machines to transmit torque. It has the advantages of elastic vibration reduction, no noise, and no need for lubrication. It is today's replacement tooth Ideal product for type couplings and general couplings.The diaphragm coupling is composed of at least one diaphragm and two shaft sleeves.